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MCCB 3P 250A 70kA Standard Electronic 250A Frame NM8N Chint

BRAND: CABAC
SKU: 271395
$1,323.40 List price: $1,764.60
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Chint NM8N 250A 3P MCCB features 70kA breaking capacity, standard electronic trip unit and a 250A frame. Ideal for switchboard mains and sub-mains protection.

Alternatively Known As: CHINT NM8N 250A MCCB, 250AF moulded case circuit breaker, 3-phase electronic MCCB, 70kA MCCB

Technical Specifications
  • Product Type: Moulded case circuit breaker
  • Number of Poles: 3P
  • Frame Size: 250A
  • Rated Current: 250A
  • Trip Unit: Standard electronic type, EM
  • Breaking Capacity: 70kA at 380–440V AC
  • Service Breaking Capacity: 100% of Icu at rated conditions
  • Rated Operational Voltage: 380/400/415V AC, with additional ratings up to 690V AC
  • Rated Insulation Voltage: 1000V
  • Rated Impulse Withstand Voltage: 8kV
  • Rated Frequency: 50/60Hz
  • Utilisation Category: A
  • Installation: Fixed surface mounting
  • Terminal Connection: Screw terminals
  • Ingress Protection: IP40
  • Operating Temperature: -40°C to +70°C
  • Mechanical Life: Up to 25,000 operating cycles
  • Electrical Life: Up to 10,000 operating cycles at 415V AC
  • Dimensions (H x L x W): 157mm x 88.7mm x 105mm
  • Weight: 1.85 kg
Key Features
  • 70kA short-circuit breaking capacity for high-fault-level distribution systems
  • 250A frame with 250A rated current
  • Three-pole configuration for three-phase power distribution
  • Standard electronic trip unit for adjustable overload and short-circuit protection
  • Suitable for switchboard mains and sub-mains protection
  • Suitable for isolation when installed in accordance with the manufacturer's instructions
  • Compatible with optional auxiliary, alarm, shunt-trip, undervoltage-release and operating-mechanism accessories
  • Certified product family tested to IEC/EN 60947-2 requirements
Professional Installation Requirements
  • Installation, testing and commissioning must be performed by a licensed electrician in accordance with AS/NZS 3000, applicable switchboard requirements and the manufacturer's instructions. Verify fault level, discrimination, cable capacity, tightening torque and Australian regulatory registration before energising.
Applications
  • Switchboard mains protection
  • Switchboard sub-mains protection
  • Commercial and industrial power distribution
  • Three-phase feeder protection
  • Electrical equipment and distribution-board protection
  • Data centre and infrastructure power distribution
Standards & Compliance
  • AS/NZS IEC 60947.2 applicable to low-voltage circuit-breakers
  • AS/NZS 3000 Wiring Rules apply to selection and installation within Australian electrical installations
  • Confirm RCM and local regulatory registration requirements for the supplied variant before installation
Environmental Benefits
  • Electronic trip control can support more precise protection settings and reduce unnecessary equipment replacement
  • Long mechanical and electrical service life can reduce replacement frequency and associated waste
  • Metal and engineering-plastic components can be separated for recycling at end of service life
  • RoHS declaration is available for the NM8N product family, supporting restriction of hazardous substances
Warranty Information

CHINT's general warranty policy specifies 27 months from the date of manufacture for other low-voltage apparatus sold through authorised channels, subject to the applicable sales contract and warranty conditions.

Available Now

Available through authorised CHINT distributors in Australia.

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